Electrical busway splice connector

• US 9,190,791 B1
• Filed: 07/31/2014
• Issued: 11/17/2015
• Est. Priority Date: 07/31/2014
• Status: Active Grant

• Current Assignee: Power Distribution Incorporated (Eaton Corporation PLC.)
• Original Assignee: Power Distribution Incorporated (Eaton Corporation PLC.)
• Inventors: Jaena, Mario L., Gulkarov, Vladimir, Folk, Isaac
• Primary Examiner(s): Riyami, Abdullah
• Assistant Examiner(s): Patel, Harshad
• Application Number:
  US14/448,043
• Time in Patent Office: 474 Days
• Field of Search: 439/210, 439/113, 439/207, 439/209, 439/213, 439/507, 439/509, 174/68.1, 174/71.B, 174/72.B, 174/88.B, 174/88.R, 174/149.B
• US Class Current: 1/1
• CPC Class Codes: H01R 13/187 with spring member in the socket
• CPC Class Codes: H01R 25/145 Details, e.g. end pieces or joints H01R25/147 takes precedence
• CPC Class Codes: H01R 25/162 Electrical connections between or with rails or bus-bars rails having primarily a non electrical function H01R4/64
• CPC Class Codes: H01R 4/4881 using a louver type spring
• CPC Class Codes: H02G 5/007 Butt joining of bus-bars by means of a common bolt, e.g. splice joint electrically conductive connections characterised by contacting members H01R4/58
• CPC Class Codes: H02G 5/06 Totally-enclosed installations, e.g. in metal casings
• CPC Class Codes: H02G 5/10 Cooling

Abstract

A splice connector for a busway system utilizes individual connectors made of a conductive material and having a u-shaped cross-section that fit over ends of a pair of busbars to be connected to each other, and within which are mounted multi-contact louvers that extend the length of the connectors to establish a low impedance electrical connection between the connector and the respective busbars. The louvers are secured in place by a dovetail groove that retains the louvers within the connectors and causes the individual contact sections of the louvers to bow outwardly so as to press against the busbars when the connector is fitted over the busbars. The connectors are snapped into insulative housing halves or sections that align the connectors with the busbars, and that provide isolation between horizontally aligned pairs of connectors. A planar insulator board provides separate between vertically-aligned pairs of busbars when the connectors are fitted over the busbars and the insulative housing sections are aligned and secured to each other. Spacers may be utilized to enable different sized u-shaped connectors to fit within a standard insulative housing.

Claims

1. A connector for use in electrically connecting a pair of busbars extending from different busway sections, the busbars being axially aligned and having facing end surfaces, comprising:

an electrically conductive elongated connector member having a generally u-shaped cross-section into which respective ends of the pair of busbars are fitted; and

a pair of electrically conductive multi-contact louvers,

wherein parallel sidewalls of the electrically conductive elongated connector member include dovetail grooves into which the louvers are fitted such that respective side edges of the louvers extend into dovetail portions of the grooves, said dovetail portions retaining the louvers, and

wherein the width of the louvers exceeds a width of the grooves to cause the individual contact sections of the louvers to bow outward away from the surface of the groove to pressingly engage surfaces of the busbars when the busbars are inserted into the electrically conductive elongated connector member.

2. A splice assembly for joining two busway sections of a busway system and for electrically connecting individual pairs of busbars extending from each of the busway section, the individual pairs of busbars being axially aligned and facing end surfaces, comprising:

at least four electrically conductive elongated connector members having a generally u-shaped cross-section, each electrically conductive elongated connector member including a pair of louvers extending along respective sidewalls of the elongated members;

a pair of insulative housing sections, each said housing section including two sidewalls connected to a top/bottom wall extending transversely between the sidewalls, and an isolating wall extending transversely from the top/bottom wall midway between the two sidewalls to form two longitudinally-extending compartments, said compartments each being arranged to receive and hold respective ones of the electrically conductive elongated connector members, and said isolating wall electrically insulating an electrically conductive elongated connector member in a first one of the compartments from an electrically conductive elongated connector member in a second one of the compartments; and

a planar insulator extending between a first pair of electrically conductive elongated connector members in one of the insulative housing sections and a second pair of electrically conductive elongated connector members in a second one of the insulative housing sections,

wherein said splice assembly is assembled to said busbars by fitting said electrically conductive elongated connector members over axially aligned pairs of said busbars and fastening said insulative housing sections to each other to capture said busbars and the planar insulator, in order to correct an antecedent base issue, within a completed housing formed by said two insulative housing sections.

3. The splice assembly as claimed in claim 2, wherein said compartments of said insulative housing sections each includes a pair of bulkheads having a u-shaped opening corresponding to an exterior shape of the electrically conductive elongated conductor members for receiving and aligning said electrically conductive elongated conductor members within respective said compartments.

4. The splice assembly as claimed in claim 3, further comprising resilient hook members extending from said sidewalls and isolating wall of the insulative housing sections for retaining said electrically conductive elongated connector members within said compartments.

5. The splice assembly as claimed in claim 2, further comprising resilient hook members extending from said sidewalls and isolating wall of the insulative housing sections for retaining said electrically conductive elongated connector members within said compartments.

6. The splice assembly as claimed in claim 2, wherein parallel facing interior surfaces of each said electrically conductive elongated connector member include dovetail grooves into which the louvers are fitted such that respective side edges of the louvers extend into dovetail portions of the grooves, said dovetail portions retaining the louvers, and

wherein the width of the louvers exceeds a width of the grooves to cause the individual contact sections of the louvers to bow outward away from the surface of the groove to pressingly engage surfaces of the busbars when the busbars are inserted into the electrically conductive elongated connector member.

7. The splice assembly as claimed in claim 2, wherein a height of said isolating wall is less than a height of said sidewalls of the insulative housing sections to capture said planar member between respective said isolating walls of the insulative housing sections when the insulative housing sections are assembled to each other.

8. The splice assembly as claimed in claim 2, further comprising mating alignment members extending from said insulative housing sections for aligning said insulative housing sections when assembled together, and fasteners for fastening said insulative housing sections to each other.

9. The splice assembly as claimed in claim 2, further comprising a ground shunt in the form of a strap that extends between and is secured to metal shield housings of respective busway sections.

10. The splice assembly as claimed in claim 9, further comprising an insulative cover that extends over said ground shunt between said busway sections.

11. The splice assembly as claimed in claim 2, further comprising a cable harness securing member for securing at least one cable extending along an exterior of said busway.

12. The splice assembly as claimed in claim 2, further comprising spacers that fit over sidewalls of the electrically conductive elongated connector members to enable electrically conductive elongated connector members of different sizes to fit into said compartments of the insulative housing sections.

13. The splice assembly as claimed in claim 2, wherein the busway system is a modular “

Continuous Bus Power Distribution System”

(CBusPDS).